1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f9ad9b442ca89fe90217ef30745a053bb52f4937729fa6bb3258f6b38df88a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70d38b16-9fd9-4a7d-9da0-11ce13320b9a.json and https://artists.proofprofile.net/proofs/artist/70d38b16-9fd9-4a7d-9da0-11ce13320b9a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369f4ced3a7b53f9c4534bd2cf48b2d41c79a03439a13b8a94eb5939b18d0af5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2024663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56352e6bd062c11d3dcb787c406aeba957d8b16e5bfe4db05e0697ab804f32bf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2018689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86ac503cebf64ce4ba409eb396e1ffc08121bf12614ab7296baece048c97886. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2019488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958ebac17254aad60e6d92c443e4f56e70f992d9b745370721920e25cde05e95. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLT2H2300217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae95bc4ec5cbe21e989ee9800b2e8f41fd9c70f6630347a630bd8f4530fcee1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DK4YA2305101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10ece202b06bebef10797add4ef943bca584bd2ea93844ab2368b0d31af7148. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22365354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cec8c22b8b2f5e7ec4165ccb990c2c47d14b79b5e0e337c34bb2fab734c43e4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLT2H2200430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107e6ee51c07d7d83678dba6ef43618a7e365d552335a7bb0fd8ddf871435c31. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5ZP2200102.
How To Save A Life (feat. loafers & The High)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f950177e134dfaa697f056a7eaaea3166726e9e6e7196f63d3ecded404fe709. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12139804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4621bcd6fe4c18c11f5371c7cc89d30e00a7ffa63ede3867c62111c6e97cbe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6XY2113113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b454dff9b8db48a9d0f27a1fa1a56eb0ce52dce2e4bb3bcd22ae921706ab53f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2129853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73924b543b1f527d66d9caca432f932163afafec64becf0498fe1547971a24b1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2153531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717b74368aeec52adc2699fd91739449768c6dcc7bcedb60e87d780c4f58186a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2057481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f865cb64733cd86e7bee799033b3f6c61a1a255294400b6bd3ec7e63befc433. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2030774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4078b670d8831579540680d3ce92dadb3be14551adab91231abdfbe948f50e2c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVWR2005101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8aa9941667bca4987dc98f1601c2c469d15f38815eda08d82a7d34135a0e6c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKPL1972498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d35711c600b95103d6ccec54ef52a088e5c2372bd5a432867404b455c5b78da. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLT2H2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9354056845406d9feaa8a1d6553f2ac57ecd37af60d8438a4a8a5b6a82a50bca. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2019595.